The humans are destroying nature day by day,__________of course,will cause severe punishment from it sooner or later.
| A．who | B．when | C．on which | D．which |
When I was a child, my teacher told me that the earth ______round the sun.
| A．to go | B．goes | C．has gone | D．going |
You will fail in the coming examination________ you work hard at your lessons.
| A．unless | B．if | C．whether | D．when |
---I must be back now. have a good trip.
---_________.
| A．The same to you | B．You are welcome |
| C．Thank you | D．That’s all right |
______ Wang Mei, two girs in our class took part in 1,500-meter race and she won the first.
| A．Except | B．Except for | C．Besides | D．Beside |
About 50 American ______ will come to this museum to enjoy those famous Chinese painting.
| A．tourists | B．travelers | C．passengers | D．visitors |